Open/close control system for inspection lid

Abstract

An open/close control system for an inspection lid adapted not to open while a vehicle travels. An emergency release device is provided behind the inspection lid, where the emergency release device disables power transmission of a driver which opens and closes a side entrance/exit door of a railway vehicle. The emergency release device is installed in a space inside a wall surface inside the vehicle, and the space can be opened and closed by the inspection lid. The open/close control system has a locking device provided in the space inside the wall surface in order to restrict rotation of the inspection lid, and also has an open/close controller which detects traveling of the railway vehicle to actuate the locking device.

1. An open/close control system for an inspection lid, wherein emergency release means is provided behind the inspection lid, where the emergency release means disables power transmission of drive means for opening and closing a side entrance/exit door of a railway vehicle, the emergency release means being installed in a space inside a wall of the vehicle, the space being opened and closed by the inspection lid, the open/close control system comprising:
 a locking device provided in the space inside the wall to restrict rotation of the inspection lid; and 
 an open/close control device which is connected to the locking device, detects traveling of the railway vehicle, operates the locking device in response to a detected traveling to disable opening of the inspection lid while the railway vehicle is traveling, and unlocks the locking device to enable opening of the inspection lid while the vehicle stops. 
 
     
     
       2. The open/close control system for inspection lid according to  claim 1 , wherein the locking device includes:
 a lock plate fixed on an inside of the inspection lid; and 
 a locking solenoid that causes a lock pin to protrude by a solenoid to restrict rotation of the inspection lid through the lock plate. 
 
     
     
       3. The open/close control system for inspection lid according to  claim 2 , wherein the locking solenoid includes an urging member to retreat the lock pin. 
     
     
       4. The open/close control system for inspection lid according to  claim 1 , wherein
 the open/close control device is configured to receive a detection signal from a speed sensor and operate the locking device based on a fixed speed. 
 
     
     
       5. The open/close control system for inspection lid according to  claim 1 , wherein
 the drive means is an air cylinder or an electrical actuator, and 
 the emergency release means is an emergency release cock for releasing working air from the air cylinder to the atmosphere or an emergency release switch for shutting off energization to the electrical actuator from a power supply coupled thereto. 
 
     
     
       6. The open/close control system for inspection lid according to  claim 2 , wherein
 the open/close control device is configured to receive a detection signal from a speed sensor and operate the locking device based on a fixed speed. 
 
     
     
       7. The open/close control system for inspection lid according to  claim 3 , wherein
 the open/close control device is configured to receive a detection signal from a speed sensor and operate the locking device based on a fixed speed. 
 
     
     
       8. The open/close control system for inspection lid according to  claim 2 , wherein
 the drive means is an air cylinder or an electrical actuator, and 
 the emergency release means is an emergency release cock for releasing working air from the air cylinder to the atmosphere or an emergency release switch for shutting off energization to the electrical actuator from a power supply coupled thereto. 
 
     
     
       9. The open/close control system for inspection lid according to  claim 3 , wherein
 the drive means is an air cylinder or an electrical actuator, and 
 the emergency release means is an emergency release cock for releasing working air from the air cylinder to the atmosphere or an emergency release switch for shutting off energization to the electrical actuator from a power supply coupled thereto.